Surname Dofen (Dauphin 
, Dofen 
) , around the world, is a common last name. The last name Dofen is habitual in Reunion, where it is quite a common surname, Luxembourg, and France, where it is quite a rare surname. Measured by absolute frequency, it is commonest in France, the United States, and Germany. Very seldom, Dofen is the forename as well as the last name.